在经典物理中什么能分别体现物质的分离性和连续性？（）
A、粒子性和波动性
B、协变性和随机性
C、因果性和量子性
D、粒子性和随机性
参考答案：A
The retired man donated most of his savings to the school damaged by the earthquake in Yushu ,________the students to return to their classrooms.
A．enabling
B．having enabled
C．to enable
D．to have enabled
宋神宗熙宁年间，起用王安石实行“（）”。
rthquake in Yushu ,________the students to return to their classrooms.